CN110538512A - Filtration equipment and filtration method for solid particle aqueous dispersion - Google Patents

Abstract

The invention relates to a filtering device and a filtering method for an aqueous dispersion of solid particles. The device includes a tank body, a filter unit and an oscillation unit. The tank body includes a top cover, a bottom cover, and a The tank body is provided with a feed pipe, a discharge pipe, an air compressor, a pressure gauge and a liquid level gauge. The filter unit and the oscillation unit are located in the tank body, and the oscillation unit is located in the filter unit. Below, and in the tank between the filter unit and the oscillating unit, a baffle is provided, and the baffle is used to guide the water-based dispersion filtered out of the filter unit into the oscillating unit. The filter equipment uses stirring and grinding to break the large particle aqueous dispersion, and then uses filter ring filtration and vibration filtration to remove impurities in the solid particle aqueous dispersion. The invention has the advantages of simple structure, convenient operation, continuous production, high filtration efficiency and easy cleaning.

Description

Filtration equipment and filtration method for solid particle aqueous dispersion

technical field

The invention relates to filtering equipment, in particular to a filtering equipment and a filtering method for a solid particle aqueous dispersion, and is particularly suitable for filtering out large particle substances in the solid particle aqueous dispersion.

Background technique

In the production process of water-based dispersion of solid particles such as water-based color paste and coal-water slurry, it is often produced according to the processes of feeding, dispersing, grinding, testing, and packaging. Impurities in raw materials, raw materials that are not fully dispersed, etc. It can enter semi-finished products and finished products through various channels. In order to further remove large particles and improve the fluidity of aqueous dispersions, it is usually necessary to filter the product during the production process. Generally, when the filtration quality of water-based dispersions is not high, you can choose a single-layer or multi-layer filter cloth for filtration. However, in the case of a large number of large particles, this filtration method is easy to block the filter cloth and requires frequent cleaning or replacement of the filter cloth. cloth, leading to problems such as poor filtering effect and heavy workload, which seriously affects the quality and efficiency of filtering. How to complete the filtration of aqueous dispersion slurry with simple equipment and remove large particles on the filter material in time is an important link in the production process of aqueous dispersion slurry.

The Chinese patent with the application number CN201810019026.9 discloses a high-efficiency slurry raw material filter device. The filter device cooperates with the rotating shaft, stirring blade, motor, cam and filter plate. The motor drives the cam to rotate, so that the support plate is upward Movement, so that the elastic device is extended, the stirring blade can stir the raw materials, so that the filter device can place more raw materials at one time, and the possibility of raw material clogging is reduced. Although the device is not easy to block and has a large processing capacity, it is inconvenient to clean and needs manual cleaning after shutdown. The Chinese patent with the application number CN201820681162.X discloses a water-based paint filter residue device, in which the first filter screen and the second filter screen are two and arranged at intervals up and down in a "V" shape, and the two filter screens One end is connected to the support plate through a spring, and the other end passes through the side wall of the barrel and is fixedly connected with a support rod. The cylinder drives the support rod to swing, and the water-based paint filter device can drive the first filter screen and the second filter screen to oscillate continuously The solid particles that come out are oscillated into the filter residue box to collect, and the bottom of the filter residue box is a filter screen, which can also filter the solid particles. The device can collect filter residues, but the filter residue box is inside the device and needs to be taken out and collected regularly, otherwise the filter residue box will be clogged and the filtration efficiency will be affected. It is difficult for the filtering equipment disclosed in the above-mentioned prior art to meet the requirements of industrial production in terms of filtration efficiency.

The Korean patent with the publication number KR101622368 introduces a water treatment device with filtering and backwashing functions, which can effectively clean the filter device without disassembling the filter housing, and the German patent with the publication number DE3905113 introduces a cleaning The method on the surface of the filter uses a slidable spray rod to clean the filter plate with compressed air. Although the filter equipment introduced by these two patents has an automatic cleaning function, the equipment disclosed by these two patents is effective in filtering color paste, water, etc. In the process of water-based dispersions with a high content of large particles such as coal slurry, it is often difficult to work continuously because of the high cleaning frequency, and the equipment is too complicated, which puts a lot of pressure on the maintenance of the equipment.

Contents of the invention

In order to overcome the above-mentioned defects, the present invention provides a kind of filtration equipment of aqueous dispersion of solid particles, which adopts the mode of stirring and grinding to further pulverize the aqueous dispersion of large particles, and then adopts filter ring filtration and vibration filtration to remove the aqueous dispersion of solid particles The impurities in the filter have a simple structure, a high degree of automation, are not prone to clogging, and have high filtration efficiency.

The technical scheme that the present invention adopts in order to solve its technical problem is:

A kind of filtering equipment of solid particle aqueous dispersion, comprises tank body, filter unit and oscillation unit, and described tank body comprises top cover, bottom cover, and the side wall between described bottom cover and top cover, and described tank The body is provided with a feed pipe and a discharge pipe, the filter unit and the oscillating unit are located in the tank, the oscillating unit is located below the filter unit, and a deflector is provided in the tank between the filter unit and the oscillating unit, The deflector is used to introduce the aqueous dispersion filtered out of the filter unit into the oscillation unit;

Wherein, the filter unit includes a stirring shaft, paddles, a filter ring and a solid plate, the filter ring is fixed in the tank, the stirring shaft is located in the filter ring, and its upper end is positioned and connected to the output shaft of the motor one and Driven by a motor to rotate, its lower end is fixed with a number of paddles, the angle between the paddle and the horizontal plane is an acute angle, a number of scrapers are arranged under the paddle along its length direction, and the solid plate is fixed on the filter The tank below the ring, and the lower end of the filter ring is closely attached to the upper surface of the solid plate, the aqueous dispersion enters the filter ring through the feed pipe and falls on the solid plate, and the scraper is used for grinding Slurry on solid boards;

Wherein, the oscillating unit includes an oscillating box, and a second filter screen is arranged in the oscillating box, and the second filter screen divides the oscillating box into upper and lower layers, the two ends of the oscillating box are connected with elastic elements, and the oscillating box The lower end is connected to the second motor, and the oscillation box rotates and oscillates in the tank under the joint action of the second motor and the elastic element, and the filtered aqueous dispersion is discharged from the oscillation box to the outside of the tank through the discharge pipe.

Preferably, the bottom cover and the side wall are integrally formed, and the top cover is detachably connected to the side wall.

Preferably, the filter ring includes a first filter screen and a locking ring, the first filter screen is a hollow cylinder structure with upper and lower openings, and its upper end is fixedly connected to the locking ring, and the locking ring is provided with several A circular hole, the locking ring is detachably fixed on the top cover, the diameter of the mesh on the first filter is 1-5 mm, and the diameter of the first filter is smaller than the inner diameter of the tank body.

Preferably, the stirring shaft is arranged vertically along the central axis of the tank, the projected length of the paddle on the horizontal plane is slightly smaller than the diameter of the first filter screen, and the angle between the paddle and the horizontal plane is ≤30°, The scrapers are arranged along the length direction of the lower ends of the entire paddle blades, and adjacent scrapers are partially connected. There are gaps between the blades of the scrapers and several through holes are arranged on the scrapers.

Preferably, the solid plate includes a plate surface and one end connected to a plurality of support rods arranged at intervals on the plate surface, and the other end of the support rod is fixed to the side wall of the tank body, the plate surface is in the shape of a right cone, and the cone The angle between the generatrix of the body and the horizontal plane is equal to the angle between the blade and the horizontal plane.

Preferably, the deflector is placed obliquely in the tank between the filter unit and the oscillation unit, the upper end of the deflector is fixed to the side wall of the tank, and the lower end is a free end, which is located directly above the oscillation box .

Preferably, the outer diameter of the oscillation box is smaller than the inner diameter of the tank, the second filter is a wire mesh, the outer diameter of the second filter is the same as the inner diameter of the oscillation box, and the second filter is snapped Fixed inside the vibration box, the diameter of the mesh on the second filter is 0.1 ~ 1mm, the bottom of the vibration box is provided with at least two rollers, the rollers are placed on the bottom cover of the tank and can be placed on the bottom cover scroll.

Preferably, the elastic element includes a spring, a spring seat and an adjustment knob, the spring is placed in the tank, and one end of the spring is connected to the inside of the spring seat, and the other end of the spring is connected to the outside of the oscillation box, and the spring seat is placed Outside the side wall of the box body, the adjusting knob is fixed on the outside of the spring seat.

Preferably, the tank body is provided with an air compressor, a pressure gauge and a liquid level gauge, and the feed pipe, motor one, pressure gauge and liquid level gauge are placed on the top cover of the tank body, and on the feed pipe A feed control valve is provided, the air outlet of the air compressor is connected to the tank body, the discharge pipe passes through the bottom cover of the tank body and communicates with the oscillation box, and the discharge pipe is provided with a discharge control valve , the motor two is located on the bottom cover of the tank body, and the feed control valve, discharge control valve, air compressor, pressure gauge, liquid level gauge, motor one, adjustment knob and motor two are all connected to the PLC control system.

The present invention also provides a kind of filtering method using the filtering equipment of solid particle aqueous dispersion, comprises the steps:

S1: Set the process parameters of the feed control valve, discharge control valve, air compressor, pressure gauge, liquid level gauge, motor 1, elastic element adjustment knob and motor 2 through the PLC control system;

S2: The water-based dispersion of solid particles passes through the feed control valve to control the feed flow, enters the tank through the feed pipe, and falls onto the solid plate; the water-based dispersion of solid particles is stirred by paddles and grinded by scrapers, and the large particles are crushed Crushed, and then pass through the filter ring, the remaining large particles cannot pass through, and stay on the solid plate to continue stirring and grinding, and the impurities are also blocked by the filter ring; an air compressor is used to create high pressure to ensure that the filter ring is not easy to be blocked, and the pressure gauge Monitor the pressure in the tank to prevent the pressure from being too high. The liquid level gauge monitors the liquid level in the tank and controls the feed flow synchronously, thus completing the first filtration;

S3: The aqueous dispersion of solid particles passes through the filter ring and enters the oscillation box downwards through the deflector. The oscillation box rotates and oscillates on its horizontal plane under the joint action of the second motor and the elastic element to further refine the aqueous dispersion of solid particles; The particle water-based dispersion passes through the second filter screen in the vibration box to remove smaller impurities; finally, a solid particle water-based dispersion product with uniform particle size without large particles is obtained, and the discharge is controlled by the discharge control valve;

S4: When the PLC control system detects that the discharge flow rate of the solid particle aqueous dispersion is lower than the set flow rate of the discharge control valve, control the feed control valve to stop feeding, and when the discharge is completed, open the tank for cleaning;

S5: Take off the top cover, and then take out the filter ring for cleaning, or replace the first filter screen on the filter ring, and continue to filter after installation.

The beneficial effects of the present invention are: the filter equipment of this application adopts the mode of stirring and grinding to break the large-particle aqueous dispersion, large particles and impurities cannot pass through the filter ring, and the solid particle aqueous dispersion passes through the filter ring and then adopts vibration filtration to further refine and Remove smaller impurities, and the equipment is easy to disassemble and clean. Compared with traditional filtering equipment, the filtering equipment of this application is not easy to clog, easy to clean, and has a high degree of automation; the filtering method of this application adopts multiple filtering methods, combined with applying a certain pressure , rotate to generate eddy currents for continuous and efficient filtration; the technical scheme described in this application has the advantages of simple structure, easy operation, continuous production, high filtration efficiency, easy cleaning, etc., and is suitable for water-based dispersion of solid particles such as water-based color paste and coal-water slurry body filtration.

Description of drawings

Fig. 1 is the structural representation of filter equipment of the present invention;

Fig. 2 is the top view of the blade of the specific embodiment of the present invention;

Fig. 3 is the top view of the solid plate of the specific embodiment of the present invention;

Fig. 4 is a schematic diagram of a scraper according to a specific embodiment of the present invention;

Fig. 5 is a schematic diagram of a filter ring of a specific embodiment of the present invention;

Fig. 6 is a schematic diagram of a single elastic element in the filter device of the present invention;

In the figure: 1 tank body; 2 top cover; 3 feed pipe; 4 feed control valve; 5 discharge pipe; 6 discharge control valve; 7 air compressor; 8 pressure gauge; 9 liquid level gauge; 10 motor one ; 11 stirring shaft; 12 paddle; 12-1 scraper; 12-2 through hole; 13 filter ring; 13-1 first filter screen; 13-2 locking ring; 13-3 round hole; 14-1 board surface; 14-2 support rod; 15 guide plate; 16 vibration box; 17 second filter screen; 18 elastic element; 18-1 spring; 18-2 spring seat; 18-3 adjustment knob; ; 20 motors II.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein, for example, can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

This specific embodiment describes in detail a kind of filtration equipment of solid particle aqueous dispersion, and the specific structure is shown in Fig. The body includes a top cover 2, a bottom cover, and a side wall between the bottom cover and the top cover. The tank body 1 is provided with a feed pipe 3, a discharge pipe 5, an air compressor 7, and a pressure gauge 8 And liquid level gauge 9, described filter unit and oscillation unit are positioned at tank body, and this oscillation unit is positioned at the below of filter unit, and in the tank body between filter unit and oscillation unit, be provided with guide plate 15, this guide plate is used for The aqueous dispersion filtered out of the filter unit is introduced into the oscillation unit;

Wherein, the filter unit includes a stirring shaft 11, a paddle 12, a filter ring 13 and a solid plate 14, the filter ring 13 is fixed in the tank body 1, the stirring shaft 11 is located in the filter ring, and the stirring shaft 11 is vertically arranged along the central axis direction of the tank body, and its upper end is positioned and connected with the output shaft of motor one 10 and driven to rotate by motor one, and its lower end is fixedly provided with several blades 12, and the included angle between the blades and the horizontal plane is Acute angle, more preferably, the angle between the paddle and the horizontal plane is ≤30°, and the projected length of the paddle 12 on the horizontal plane is slightly smaller than the diameter of the first filter screen 13-1, as shown in Figure 2, this specific In the embodiment, three paddles are set, the solid plate 14 is fixed in the tank below the filter ring, and the lower end of the filter ring 13 is closely attached to the upper surface of the solid plate 14, and the aqueous dispersion is passed through The material tube 3 enters the filter ring 13 and falls on the solid plate 14, as shown in Figure 4, a number of scrapers 12-1 are arranged below the paddle along its length, and the scrapers are used to grind the solid plate 14 Specifically, the scraper 12-1 is arranged along the length direction of the lower end of the entire paddle, and the adjacent scrapers are partially connected. There is a gap between the blades of the scraper and several A through hole 12-2, in the present embodiment scraper is set to trapezoidal, offers 2 through holes on a single scraper.

As shown in Figure 3, the solid plate 14 includes a plate surface 14-1 and one end connected to a number of support rods 14-2 spaced apart from each other on the plate surface, and the other end of the support rod is fixed to the side wall of the tank body. The plate surface 14-1 is in the shape of a right cone, and the angle between the generatrix of the cone and the horizontal plane is equal to the angle between the paddle 12 and the horizontal plane. In this embodiment, the angle between the generatrix of the cone and the horizontal plane, the blade and The included angles of the horizontal planes are all 15°, and 4 support rods are arranged on the solid plate.

As shown in Figure 5, the filter ring 13 includes a first filter screen 13-1 and a locking ring 13-2, the first filter screen 13-1 is a hollow cylindrical structure with upper and lower openings, and its upper end is fixedly connected The locking ring, the locking ring 13-2 is provided with a number of round holes 13-3, in this embodiment, the locking ring is provided with 4 round holes, the locking ring is detachably fixed on the The top cover 2, the diameter of the mesh on the first filter is 1-5 mm, specifically the diameter of the mesh on the first filter is 3 mm, and the diameter of the first filter is smaller than the inner diameter of the tank body 1 .

In this embodiment, the deflector 15 is obliquely placed in the tank between the filter unit and the oscillation unit, the upper end of the deflector 15 is fixed on the side wall of the tank, the lower end is a free end, and is located Right above the oscillation box 16, when the water-based dispersion is thrown out of the filter ring, it falls into the deflector 15 through the gap between the support rods 14-2, because the deflector is inclined, so the water-based dispersion directly flows from the guide The flow plate slides into the oscillation box 16.

The oscillation unit includes an oscillation box 16, and a second filter screen 17 is arranged inside the oscillation box. The second filter screen divides the oscillation box into upper and lower layers, and the two ends of the oscillation box are symmetrically connected to elastic elements 18. The lower end of the oscillation box 16 is connected to the second motor 20, and the oscillation box is rotated and oscillated in the tank under the joint action of the second motor 20 and the elastic element 18, and the filtered water-based dispersion is discharged from the oscillation box through the discharge pipe 5. outside the body. The outer diameter of the oscillation box 16 is smaller than the inner diameter of the tank body 1, the second filter screen 17 is a wire mesh, the outer diameter of the second filter screen is the same as the inner diameter of the oscillation box, and the second filter screen is buckled Fixed inside the vibration box, the diameter of the mesh on the second filter is 0.1 ~ 1mm, the bottom of the vibration box 16 is provided with at least two rollers 19, the rollers are placed on the bottom cover of the tank and can be placed on the bottom cover In this embodiment, the diameter of the mesh on the second filter is 0.5 mm, and two rollers 19 and four elastic elements 18 are provided.

As shown in Figure 6, the elastic element 18 includes a spring 18-1, a spring seat 18-2 and an adjustment knob 18-3, the spring is placed in the tank, and one end of the spring is connected to the inner side of the spring seat, and the other end of the spring is connected to the inside of the spring seat. One end is connected to the outside of the vibration box 16, the spring seat is placed outside the side wall of the box body, and the adjusting knob is fixed on the outside of the spring seat.

In this embodiment, the bottom cover and the side wall are integrally formed, the top cover 2 is detachably connected to the side wall, and the top cover 2 is connected to the side wall through a locking device. After the locking device is released The top cover can be removed from the side wall, which is convenient to take out the filter ring 13 in the tank for cleaning, or replace the first filter screen 13-1 on the filter ring. The feed pipe 3, motor one 10, pressure gauge 8 and liquid level gauge 9 are placed on the top cover of the tank body, the feed pipe is provided with a feed control valve 4, and the air outlet of the air compressor 7 Connected to the tank body, the discharge pipe 5 passes through the bottom cover of the tank body and communicates with the oscillation box 16, the discharge pipe is provided with a discharge control valve 6, and the motor 20 is located at the bottom of the tank body On the cover, the feed control valve 4, discharge control valve 6, air compressor 7, pressure gauge 8, liquid level gauge 9, motor one 10, adjustment knob 18-3 and motor two 20 are all connected to the PLC control system , the PLC control system is mainly used for the startup and shutdown of each electrical component in the filter equipment, the operation of each electrical component according to the set parameters, and the processing of various data information, etc. The PLC control system in this application is a common control in the field of numerical control system, which will not be described in detail in this application. The PLC control system can make the setting of process parameters more accurate and convenient, monitor the pressure and liquid level inside the equipment in real time, and properly adjust the corresponding parameters to maintain stable filtration.

Filtration process of the present invention: comprise the steps:

S1: Set the feed control valve 4, discharge control valve 6, air compressor 7, pressure gauge 8, liquid level gauge 9, motor one 10, elastic element adjustment knob 18-3 and motor two 20 through the PLC control system Process parameters;

S2: The aqueous dispersion of solid particles passes through the feed control valve 4 to control the feed flow rate, enters the tank through the feed pipe 3, and falls on the solid plate 14; the aqueous dispersion of solid particles is stirred by the paddle 12 and the scraper 12-1 Grinding, the large particles in it are broken, and then pass through the filter ring 13, the remaining large particles cannot pass through, and stay on the solid plate to continue stirring and grinding, and the impurities are also blocked by the filter ring; use the air compressor 7 to create high pressure to To ensure that the filter ring is not easy to be blocked, the pressure gauge 8 monitors the pressure in the tank to prevent the pressure from being too high, and the liquid level gauge 9 monitors the liquid level in the tank and controls the feed flow synchronously, thus completing the first filtration;

S3: The aqueous dispersion of solid particles passes through the filter ring 13 and then enters the oscillation box 16 downward through the deflector 15. The oscillation box rotates and oscillates on its horizontal plane under the joint action of the motor 20 and the elastic element 18 to further refine the solid particles. Water-based dispersion; the solid particle water-based dispersion passes through the second filter screen 17 in the oscillating box to remove smaller impurities; finally obtain a solid particle water-based dispersion product with uniform particle size without large particles, which is controlled by the discharge control valve. material;

S4: When the PLC control system detects that the discharge flow rate of the solid particle aqueous dispersion is lower than the set flow rate of the discharge control valve, control the feed control valve to stop feeding, and when the discharge is completed, open the tank for cleaning;

S5: Take off the top cover, then take out the filter ring 13 for cleaning, or replace the first filter screen 13-1 on the filter ring, and continue to filter after the installation is completed.

It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a kind of filter equipment of solid particle aqueous dispersion, it is characterized in that: comprise tank body (1), filter unit and oscillation unit, described tank body comprises top cover (2), bottom cover and be positioned at described bottom cover and the side wall between the top cover, the tank body (1) is provided with a feed pipe (3) and a discharge pipe (5), the filter unit and the oscillation unit are located in the tank body, and the oscillation unit is located in the filter unit Below, and in the tank body between filter unit and oscillation unit, deflector (15) is provided, and this deflector is used for the aqueous dispersion that filter out in the filter unit is introduced in the oscillation unit; Wherein, the filter unit includes a stirring shaft (11), a paddle (12), a filter ring (13) and a solid plate (14), and the filter ring (13) is fixed in the tank body (1), the The stirring shaft (11) is positioned in the filter ring, and its upper end is positioned and connected with the output shaft of the motor one (10) and driven by the motor one to rotate, and its lower end is fixedly provided with several paddles (12), which are connected to the horizontal plane. The included angle is an acute angle, a number of scrapers (12-1) are arranged below the paddle along its length direction, the solid plate (14) is fixed in the tank below the filter ring, and the filter ring (13) The lower end is closely attached to the upper surface of the solid plate (14); Wherein, the oscillating unit includes an oscillating box (16), and a second filter screen (17) is arranged in the oscillating box, and the second filter screen divides the oscillating box into upper and lower layers. The elastic element (18) is connected, and the lower end of the oscillation box (16) is connected with the second motor (20), and the oscillation box is rotated and oscillated in the tank under the joint action of the second motor (20) and the elastic element (18). 2. The filtering device for aqueous dispersion of solid particles according to claim 1, characterized in that: the bottom cover and the side wall are integrally formed, and the top cover (2) is detachably connected to the side wall. 3. the filtration equipment of solid particle aqueous dispersion according to claim 2, is characterized in that: described filter ring (13) comprises the first filter screen (13-1) and locking ring (13-2), so The first filter screen (13-1) is a hollow cylinder structure with upper and lower openings, and its upper end is fixedly connected to a locking ring, and the locking ring (13-2) is provided with several round holes (13-3), The locking ring is detachably fixed on the top cover (2), the diameter of the mesh on the first filter is 1-5 mm, and the diameter of the first filter is smaller than the inner diameter of the tank body (1). 4. The filtering device for aqueous dispersion of solid particles according to claim 3, characterized in that: the stirring shaft (11) is vertically arranged along the central axis of the tank, and the paddle (12) is projected on the horizontal plane The length of the blade is slightly smaller than the diameter of the first filter screen (13-1), the angle between the blade and the horizontal plane is ≤30°, and the scraper blade (12-1) is arranged along the length direction of the entire lower end of the blade, and adjacent The scraping blades are partially connected, gaps are provided between the blades of the scraping blades, and several through holes (12-2) are arranged on the scraping blades. 5. the filtration equipment of solid particle aqueous dispersion according to claim 1, is characterized in that: described solid plate (14) comprises plate surface (14-1) and one end is connected on the support of some mutually spaced arrangements on plate surface Rod (14-2), the other end of the support rod is fixed on the side wall of the tank, the plate surface (14-1) is in the shape of a right cone, and the angle between the generatrix of the cone and the horizontal plane is equal to the paddle (12 ) and the horizontal plane. 6. the filter equipment of solid particle aqueous dispersion according to claim 1, is characterized in that: described deflector (15) is placed obliquely in the tank body between filter unit and oscillation unit, and this deflector ( 15) The upper end is fixed on the side wall of the tank body, and its lower end is a free end, and is positioned directly above the oscillation box (16). 7. the filtration equipment of solid particle aqueous dispersion according to claim 1, is characterized in that: the outer diameter of described oscillation box (16) is less than the internal diameter of tank body (1), and described second filter screen (17) It is a wire mesh, the outer diameter of the second filter screen is the same as the inner diameter of the vibration box, and the second filter screen is fixed inside the vibration box by buckles, and the diameter of the mesh on the second filter screen is 0.1-1mm. The bottom of the oscillation box (16) is provided with at least two rollers (19), which are placed on the bottom cover of the tank body and can roll freely on the bottom cover. 8. the filtration equipment of solid particle aqueous dispersion according to claim 7, is characterized in that: described elastic member (18) comprises spring (18-1), spring seat (18-2) and adjustment knob (18- 3), the spring is placed in the tank, and one end of the spring is connected to the inside of the spring seat, the other end of the spring is connected to the outside of the oscillation box (16), the spring seat is placed outside the side wall of the box, and the adjustment knob Fixed on the outside of the spring seat. 9. The filtering device of the aqueous dispersion of solid particles according to claim 1, characterized in that: the tank body (1) is provided with an air compressor (7), a pressure gauge (8) and a liquid level gauge (9) ), the feed pipe (3), motor one (10), pressure gauge (8) and liquid level gauge (9) are placed on the top cover of the tank body, and the feed pipe is provided with a feed control valve ( 4), the air outlet of the air compressor (7) is connected to the tank body, the discharge pipe (5) passes through the bottom cover of the tank body and communicates with the oscillation box (16), and the discharge pipe is provided with There is a discharge control valve (6), the motor two (20) is located on the bottom cover of the tank, the feed control valve (4), discharge control valve (6), air compressor (7), Pressure gauge (8), liquid level gauge (9), motor one (10), adjustment knob (18-3) and motor two (20) are all connected to PLC control system. 10. A method for filtering a filtration device using the solid particle aqueous dispersion according to any one of claims 1 to 9, characterized in that: comprising the steps of: S1: Set the process parameters of the feed control valve, discharge control valve, air compressor, pressure gauge, liquid level gauge, motor 1, elastic element adjustment knob and motor 2 through the PLC control system; S2: The water-based dispersion of solid particles passes through the feed control valve to control the feed flow, enters the tank through the feed pipe, and falls onto the solid plate; the water-based dispersion of solid particles is stirred by paddles and grinded by scrapers, and the large particles are crushed Crushed, and then pass through the filter ring, the remaining large particles cannot pass through, and stay on the solid plate to continue stirring and grinding, and the impurities are also blocked by the filter ring; an air compressor is used to create high pressure to ensure that the filter ring is not easy to be blocked, and the pressure gauge Monitor the pressure in the tank to prevent the pressure from being too high. The liquid level gauge monitors the liquid level in the tank and controls the feed flow synchronously, thus completing the first filtration; S3: The aqueous dispersion of solid particles passes through the filter ring and enters the oscillation box downwards through the deflector. The oscillation box rotates and oscillates on its horizontal plane under the joint action of the second motor and the elastic element to further refine the aqueous dispersion of solid particles; The particle water-based dispersion passes through the second filter screen in the vibration box to remove smaller impurities; finally, a solid particle water-based dispersion product with uniform particle size without large particles is obtained, and the discharge is controlled by the discharge control valve; S4: When the PLC control system detects that the discharge flow rate of the solid particle aqueous dispersion is lower than the set flow rate of the discharge control valve, control the feed control valve to stop feeding, and when the discharge is completed, open the tank for cleaning; S5: Take off the top cover, and then take out the filter ring for cleaning, or replace the first filter screen on the filter ring, and continue to filter after installation.